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EPA SECTION 609 EXAM QUESTIONS AND DETALIED ANSWERS 2024 UPDATE
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EPA SECTION 609 EXAM QUESTIONS AND DETALIED ANSWERS 2024 UPDATE
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EPA SECTION 609 EXAM QUESTIONS AND DETALIEDANSWERS 2024 UPDATE
Persons servicing MVACs do not have this choice they must be certified as _______ MVAC technicians if
they perform the AC service for compensation.
Section 609
Ozone in the Earth's stratosphere is created by UV light striking _____ molecules
Oxygen
The AHRI standard now contains the new specification to limit unsaturated impurities in HFC-134a to a
maximum level of ________
40 PPM
Refrigerants may be mixed in recovery cylinders:
False ( NO MIXTURES)
After reaching the required recovery vacuum on an system, if the system pressure _____, indicating that
there is either refrigerant in liquid form, refrigerant trapped in the oil, or a leak in the system.
Rises
Most halogenated compounds will decompose at room temperature:
False
, HFC-152a MVAC systems are acceptable if MVAC systems must be designed to avoid concentrations in
the passenger cabin that are above ______ for more than 15 seconds.
3.7%
The empty refillable refrigerant tank must be evacuated to a minimum vacuum of ______ of mercury
27 inches
The internal pressure of a refrigerant cylinder with one ounce of liquid refrigerant is _______ full
cylinder:
exactly the same as
EPA does require a leak to be repaired prior to recharging a motor vehicle air conditioning system
False
Stratosphere layer consists of about _____ of the available Ozone:
90%
Ozone molecule consists of ______ atoms of oxygen
Three
The thermodynamic properties of HFC-134a are similar to CFC-12
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